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Hullegie-Peelen DM, van der Zwan M, Clahsen-van Groningen MC, Mustafa DAM, Baart SJ, Reinders MEJ, Baan CC, Hesselink DA. Clinical and Molecular Profiling to Develop a Potential Prediction Model for the Response to Alemtuzumab Therapy for Acute Kidney Transplant Rejection. Clin Pharmacol Ther 2022; 111:1155-1164. [PMID: 35202481 PMCID: PMC9314084 DOI: 10.1002/cpt.2566] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 02/21/2022] [Indexed: 02/06/2023]
Abstract
Alemtuzumab, a monoclonal antibody that depletes CD52‐bearing immune cells, is an effective drug for the treatment of severe or glucocorticoid‐resistant acute kidney transplant rejection (AR). Patient‐specific predictions on treatment response are, however, urgently needed, given the severe side effects of alemtuzumab. This study developed a multidimensional prediction model with the aim of generating clinically useful prognostic scores for the response to alemtuzumab. Clinical and histological characteristics were collected retrospectively from patients who were treated with alemtuzumab for AR. In addition, targeted gene expression profiling of AR biopsy tissues was performed. Least absolute shrinkage and selection operator (LASSO) logistic regression modeling was used to construct the ALEMtuzumab for Acute Rejection (ALEMAR) prognostic score. Response to alemtuzumab was defined as patient and allograft survival and at least once an estimated glomerular filtration rate (eGFR) > 30 mL/min/1.73 m2 during the first 6 months after treatment. One hundred fifteen patients were included, of which 84 (73%) had a response to alemtuzumab. The ALEMAR‐score accurately predicted the chance of response. Gene expression analysis identified 13 differentially expressed genes between responders and nonresponders. The combination of the ALEMAR‐score and selected genes resulted in improved predictions of treatment response. The present preliminary prediction model is potentially helpful for the development of stratified alemtuzumab treatment for acute kidney transplant rejection but requires validation.
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Affiliation(s)
- Daphne M Hullegie-Peelen
- Department of Internal Medicine, Division of Nephrology & Transplantation, Erasmus MC, Erasmus University Medical Center, Rotterdam, The Netherlands.,Erasmus MC Transplant Institute, Rotterdam, The Netherlands
| | - Marieke van der Zwan
- Department of Internal Medicine, Division of Nephrology & Transplantation, Erasmus MC, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Marian C Clahsen-van Groningen
- Erasmus MC Transplant Institute, Rotterdam, The Netherlands.,Department of Pathology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Dana A M Mustafa
- Department of Pathology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.,The Tumor Immuno-Pathology Laboratory, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Sara J Baart
- Department of Biostatistics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Marlies E J Reinders
- Department of Internal Medicine, Division of Nephrology & Transplantation, Erasmus MC, Erasmus University Medical Center, Rotterdam, The Netherlands.,Erasmus MC Transplant Institute, Rotterdam, The Netherlands
| | - Carla C Baan
- Department of Internal Medicine, Division of Nephrology & Transplantation, Erasmus MC, Erasmus University Medical Center, Rotterdam, The Netherlands.,Erasmus MC Transplant Institute, Rotterdam, The Netherlands
| | - Dennis A Hesselink
- Department of Internal Medicine, Division of Nephrology & Transplantation, Erasmus MC, Erasmus University Medical Center, Rotterdam, The Netherlands.,Erasmus MC Transplant Institute, Rotterdam, The Netherlands
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2
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Zuziela MA, Vidal J, Knorr JP. Evaluating Factors Associated With Blood Pressure Control in the Early Post-Kidney Transplant Period. Hosp Pharm 2020; 56:359-367. [PMID: 34381275 DOI: 10.1177/0018578720906614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background: Shortened allograft survival, and cardiovascular morbidity and mortality are consequences of inadequate control of hypertension for kidney transplant recipients (KTRs). Literature suggests the risk is multifactorial, although few studies have evaluated risk factors in relation to guideline recommended blood pressure (BP) goals in the early post-kidney transplant period. This study will elucidate factors associated with controlled BP in KTRs. Methods: Adult KTRs who were transplanted between January 1, 2013, and October 31, 2018, were evaluated. Coprimary outcomes included the proportion of patients who had controlled BP at postoperative day (POD) 30 and identification of the covariates associated with controlled BP at POD 30. Additional outcomes included the proportion of patients who had controlled BP at POD 60 and 90; the difference in the average number of antihypertensive medications taken pretransplant vs POD 30, 60, and 90 for patients with controlled BP at POD 30; antihypertensive use rates pretransplant vs POD 30 and 90; and class of antihypertensive used pretransplant vs POD 30 and 90. Results: At POD 30, 44% (100/226) of patients had controlled BP. The proportion of patients with controlled BP at POD 60 and 90 were 37% (82/220) and 40% (79/196), respectively. In bivariate analyses, lack of recipient hypertension (75% vs 42.5%, P = .04); fewer days on dialysis (1684 vs 2189 days, P = .005); absence of delayed graft function (51.2% vs 35.6%, P = .02); younger donor age (30 vs 40 years, P < .001); absence of donor hypertension (46.9% vs 29.3%, P = .004); and a lower median kidney donor profile index (29% vs 40%, P = .03) were associated with controlled BP at POD 30. In a multivariate analysis, donor age was independently associated with controlled BP at POD 30 (P = .03). Conclusions: This study suggests that younger donor age is associated with controlled BP, and conversely, older donor age is associated with uncontrolled BP in KTRs in the early post-kidney transplant period. Patients receiving a graft from older donors should have their BP closely monitored.
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Aronson LR. Update on the Current Status of Kidney Transplantation for Chronic Kidney Disease in Animals. Vet Clin North Am Small Anim Pract 2016; 46:1193-218. [DOI: 10.1016/j.cvsm.2016.06.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Chi J, Zaw T, Cardona I, Hosnain M, Garg N, Lefkowitz HR, Tolias P, Du H. Use of surface-enhanced Raman scattering as a prognostic indicator of acute kidney transplant rejection. BIOMEDICAL OPTICS EXPRESS 2015; 6:761-9. [PMID: 25798301 PMCID: PMC4361431 DOI: 10.1364/boe.6.000761] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Revised: 02/02/2015] [Accepted: 02/05/2015] [Indexed: 05/16/2023]
Abstract
We report an early, noninvasive and rapid prognostic method of predicting potential acute kidney dysfunction using surface-enhanced Raman scattering (SERS). Our analysis was performed on urine samples collected prospectively from 58 kidney transplant patients using a He-Ne laser (632.8 nm) as the excitation source. All abnormal kidney function episodes (three acute rejections and two acute kidney failures that were eventually diagnosed independently by clinical biopsy) consistently exhibited unique SERS spectral features in just one day following the transplant surgery. These results suggested that SERS analysis provides an early and more specific indication to kidney function than the clinically used biomarker, serum creatinine (sCr).
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Affiliation(s)
- Jingmao Chi
- Department of Chemical Engineering and Materials Science, Stevens Institute of Technology, Hoboken, NJ, 07030,
USA
| | - Thet Zaw
- Newark Beth Israel Medical Center, Newark, NJ, 07112,
USA
| | - Iliana Cardona
- Newark Beth Israel Medical Center, Newark, NJ, 07112,
USA
| | | | - Neha Garg
- Newark Beth Israel Medical Center, Newark, NJ, 07112,
USA
| | | | - Peter Tolias
- Center for Healthcare Innovation, Stevens Institute of Technology, Hoboken, NJ, 07030,
USA
| | - Henry Du
- Department of Chemical Engineering and Materials Science, Stevens Institute of Technology, Hoboken, NJ, 07030,
USA
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5
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The pathophysiology of endothelin in complications after solid organ transplantation: a potential novel therapeutic role for endothelin receptor antagonists. Transplantation 2013; 94:885-93. [PMID: 23037008 DOI: 10.1097/tp.0b013e31825f0fbe] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Although short-term allograft survival after solid organ transplantation has improved during the past two decades, improvement in long-term graft survival has been less pronounced. Common complications after transplantation include chronic allograft rejection, nephrotoxicity from calcineurin inhibitors (CNIs), and systemic hypertension, which all impact posttransplantation morbidity and mortality. Endothelin (ET)-1, a potent endogenous vasoconstrictor, inducer of fibrosis, and vascular smooth muscle cell proliferation, may play a key role in both the development of CNI-induced nephrotoxicity and endothelial vasculopathy in chronic allograft rejection. ET-1 levels increase after isograft implantation, and ET-1 plays a key role in CNI-induced renal vasoconstriction, sodium retention, and hypertension. Preclinical studies have demonstrated that endothelin receptor antagonists (ERAs) can reduce or prevent CNI-induced hypertension after renal transplantation. In addition, ERAs can ameliorate CNI-induced renal vasoconstriction and improve proteinuria and preserve renal function in animal models of renal transplantation. ET-1 may also play a significant role in cardiac allograft vasculopathy, and in animal models, ERAs improve pulmonary function and ischemic-reperfusion injury in lung transplantation and hepatic function and structure in liver transplantation. Emerging pharmacokinetic data suggest that the selective ERA ambrisentan may be used safely in conjunction with the most commonly used immunosuppressive agents tacrolimus and mycophenolate, albeit with appropriate dose adjustment. The weight of available evidence pointing toward a potential beneficial role of ERAs in ameliorating common complications after solid organ transplantation must be balanced with potential toxicities of ERAs but suggests that a randomized clinical trial of ERAs in transplant patients is warranted.
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Hoffmann U, Bergler T, Jung B, Steege A, Pace C, Rümmele P, Reinhold S, Krüger B, Krämer BK, Banas B. Comprehensive morphometric analysis of mononuclear cell infiltration during experimental renal allograft rejection. Transpl Immunol 2012; 28:24-31. [PMID: 23268138 DOI: 10.1016/j.trim.2012.12.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2012] [Revised: 12/07/2012] [Accepted: 12/08/2012] [Indexed: 11/28/2022]
Abstract
The role of specific subtypes of infiltrating cells in acute kidney allograft rejection is still not clear and was so far not examined by different analyzing methods under standardized conditions of an experimental kidney transplantation model. Immunohistochemical staining of CD3, CD20 and CD68 was performed in rat allografts, in syngeneically transplanted rats and in control rats with a test duration of 6 and 28 days. The detailed expression and localization of infiltrating cells were analyzed manually in different kidney compartments under light microscope and by the two different morphometric software programs. Data were correlated with the corresponding kidney function as well as with histopathological classification. The information provided by the morphometric software programs on the infiltration of the specific cell types after renal transplantation was in accordance with the manual analysis. Morphometric methods were solid to analyze reliably the induction of cellular infiltrates after renal transplantation. By manual analysis we could clearly demonstrate the detailed localization of the specific cell infiltrates in the different kidney compartments. Besides infiltration of CD3 and CD68 infiltrating cells, a robust infiltration of CD20 B-cells in allogeneically transplanted rats, even at early time points after transplantation was detected. Additionally an MHC class I expression could reliable be seen in allogeneically transplanted rats. The infiltration of B-cells and the reliable antigen presentation might act as a silent subclinical trigger for subsequent chronic rejection and premature graft loss.
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Affiliation(s)
- Ute Hoffmann
- Department of Internal Medicine II, University Medical Center Regensburg, Franz-Joseph-Strauss-Allee 11, 93042 Regensburg, Germany.
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7
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Wen KC, Gourishankar S. Evaluating the utility of ambulatory blood pressure monitoring in kidney transplant recipients. Clin Transplant 2012. [DOI: 10.1111/ctr.12009.] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Kevin C. Wen
- Division of Nephrology and Immunology; Department of Medicine; University of Alberta; Edmonton; Alberta; Canada
| | - Sita Gourishankar
- Division of Nephrology and Immunology; Department of Medicine; University of Alberta; Edmonton; Alberta; Canada
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8
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Wen KC, Gourishankar S. Evaluating the utility of ambulatory blood pressure monitoring in kidney transplant recipients. Clin Transplant 2012; 26:E465-70. [DOI: 10.1111/ctr.12009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Kevin C. Wen
- Division of Nephrology and Immunology; Department of Medicine; University of Alberta; Edmonton; Alberta; Canada
| | - Sita Gourishankar
- Division of Nephrology and Immunology; Department of Medicine; University of Alberta; Edmonton; Alberta; Canada
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9
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Ibernon M, Moreso F, Sarrias X, Sarrias M, Grinyo JM, Fernandez-Real JM, Ricart W, Seron D. Reverse dipper pattern of blood pressure at 3 months is associated with inflammation and outcome after renal transplantation. Nephrol Dial Transplant 2011; 27:2089-95. [DOI: 10.1093/ndt/gfr587] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
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10
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Belatacept-based regimens are associated with improved cardiovascular and metabolic risk factors compared with cyclosporine in kidney transplant recipients (BENEFIT and BENEFIT-EXT studies). Transplantation 2011; 91:976-83. [PMID: 21372756 DOI: 10.1097/tp.0b013e31820c10eb] [Citation(s) in RCA: 125] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND Cardiovascular disease, the most common cause of death with a functioning graft among kidney transplant recipients, can be exacerbated by immunosuppressive drugs, particularly the calcineurin inhibitors. Belatacept, a selective co-stimulation blocker, may provide a better cardiovascular/metabolic risk profile than current immunosuppressants. METHODS Cardiovascular and metabolic endpoints from two Phase III studies (BENEFIT and BENEFIT-EXT) of belatacept-based regimens in kidney transplant recipients were assessed at month 12. Each study assessed belatacept in more intensive (MI) and less intensive (LI) regimens versus cyclosporine A (CsA). These secondary endpoints included changes in blood pressure, changes in serum lipids, and the incidence of new-onset diabetes after transplant (NODAT). RESULTS A total of 1209 patients were randomized and transplanted across the two studies. Mean systolic blood pressure was 6 to 9 mm Hg lower and mean diastolic blood pressure was 3 to 4 mm Hg lower in the MI and LI groups versus CsA (P ≤ 0.002) across both studies at month 12. Non-HDL cholesterol was lower in the belatacept groups versus CsA (P<0.01 MI or LI vs. CsA in each study). Serum triglycerides were lower in the belatacept groups versus CsA (P<0.02 MI or LI vs. CsA in each study). NODAT occurred less often in the belatacept groups versus CsA in a prespecified pooled analysis (P<0.05 MI or LI vs. CsA). CONCLUSIONS At month 12, belatacept regimens were associated with better cardiovascular and metabolic risk profiles, with lower blood pressure and serum lipids and less NODAT versus CsA. The overall profile of belatacept will continue to be assessed over the 3-year trials.
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Israni AK, Snyder JJ, Skeans MA, Peng Y, Maclean JR, Weinhandl ED, Kasiske BL. Predicting coronary heart disease after kidney transplantation: Patient Outcomes in Renal Transplantation (PORT) Study. Am J Transplant 2010; 10:338-53. [PMID: 20415903 DOI: 10.1111/j.1600-6143.2009.02949.x] [Citation(s) in RCA: 138] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Traditional risk factors do not adequately explain coronary heart disease (CHD) risk after kidney transplantation. We used a large, multicenter database to compare traditional and nontraditional CHD risk factors, and to develop risk-prediction equations for kidney transplant patients in standard clinical practice. We retrospectively assessed risk factors for CHD (acute myocardial infarction, coronary artery revascularization or sudden death) in 23,575 adult kidney transplant patients from 14 transplant centers worldwide. The CHD cumulative incidence was 3.1%, 5.2% and 7.6%, at 1, 3 and 5 years posttransplant, respectively. In separate Cox proportional hazards analyses of CHD in the first posttransplant year (predicted at time of transplant), and predicted within 3 years after a clinic visit occurring in posttransplant years 1-5, important risk factors included pretransplant diabetes, new onset posttransplant diabetes, prior pre- and posttransplant cardiovascular disease events, estimated glomerular filtration rate, delayed graft function, acute rejection, age, sex, race and duration of pretransplant end-stage kidney disease. The risk-prediction equations performed well, with the time-dependent c-statistic greater than 0.75. Traditional risk factors (e.g. hypertension, dyslipidemia and cigarette smoking) added little additional predictive value. Thus, transplant-related risk factors, particularly those linked to graft function, explain much of the variation in CHD after kidney transplantation.
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Affiliation(s)
- A K Israni
- Department of Medicine, Hennepin County Medical Center, University of Minnesota, Minneapolis, MN, USA
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Susa D, De Bruin RWF, Mitchell JR, Roest HP, Hoeijmakers JHJ, Ijzermans JNM. Mechanisms of ageing in chronic allograft nephropathy. ACTA ACUST UNITED AC 2009. [DOI: 10.1080/17471060600756058] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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13
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Salzberg DJ. Is RAS blockade routinely indicated in hypertensive kidney transplant patients? Curr Hypertens Rep 2007; 9:422-9. [DOI: 10.1007/s11906-007-0077-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Andrés A, Morales E, Morales JM, Bosch I, Campo C, Ruilope LM. Efficacy and Safety of Valsartan, an Angiotensin II Receptor Antagonist, in Hypertension After Renal Transplantation: A Randomized Multicenter Study. Transplant Proc 2006; 38:2419-23. [PMID: 17097955 DOI: 10.1016/j.transproceed.2006.08.066] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND The prevalence of posttransplant hypertension is high, and it appears to be a major risk factor for graft and patient survival. The aim of this study was to assess the efficacy and safety of valsartan, an angiotensin-receptor blocker (ARB), in the treatment of posttransplant hypertension. METHODS A multinational, multicenter, prospective, randomized, double-blind, placebo-controlled study was performed on the treatment of hypertension (systolic blood pressure [BP] >/= 140 and/or diastolic BP >/= 90 mm Hg) in adult cyclosporin-treated renal transplant recipients randomized to receive either valsartan (80 mg once daily) or a matching placebo for 8 weeks. After the first 4 weeks, furosemide 20 mg twice daily was added on a open basis if systolic BP remained >/= 130 mm Hg and/or diastolic BP remained >/= 85 mm Hg. RESULTS One hundred fifteen (valsartan = 57, placebo = 58) uncontrolled hypertensive patients despite monotherapy for hypertension, other than angiotensin-converting enzyme inhibitor or ARB, were randomized. In the valsartan group, significant decreases were seen in systolic BP (from 153 +/- 11 to 140.9 +/- 18.35 mm Hg at 4 weeks, and 136.5 +/- 15 mm Hg at 8 weeks) and diastolic BP (from 93 +/- 9 to 85.2 +/- 11.28 mm Hg at 4 weeks, and 83.8 +/- 9.2 mm Hg at 8 weeks). There was no significant change in the placebo group. In the valsartan group, a statistically but not clinically significant reduction was observed in the mean hemoglobin concentration (12.9 +/- 1.6 g/dL versus 13.8 +/- 1.6 g/dL at 4 weeks, P < .01; and 12.3 +/- 1.6 versus 13.8 +/- 1.7 at 8 weeks; P < .001) as well as a significant increase in serum potassium (4.4 +/- 0.5 mmol/L versus 4.1 +/- 0.4 mmol/L at 4 weeks, P < .01) vs placebo. CONCLUSIONS Valsartan is effective in the treatment of posttransplant hypertension and is well tolerated.
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Affiliation(s)
- A Andrés
- Hospital 12 de Octubre, Nephrology Department, Barcelona, Spain.
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Abstract
In subjects with renal disease, reduced renal function and increased arterial stiffness are significantly associated in cross-sectional studies. The relationship is independent of age, blood pressure (BP), and atherosclerosis. Because both variables are independent predictors of cardiovascular risk, time-dependent relationships between them are important to determine. Aortic pulse wave velocity was measured noninvasively by comparison with healthy volunteers in 101 living kidney donors and their 101 corresponding recipients. Healthy volunteers were divided into 2 groups: one was recipient related through familial links and the other was nonrecipient related. Independently of age, gender, and BP, pulse wave velocity was significantly elevated in donors and recipients by comparison with the 2 groups of healthy volunteers. Pulse wave velocity was significantly higher in the recipient-related than in the nonrecipient-related group. Whereas in healthy volunteers, pulse wave velocity was exclusively related to age, gender, and BP, in donors and recipients, it was rather associated with a cluster of cardiovascular risk factors, including smoking habits and plasma glucose. Major factors related to pulse wave velocity were renal: time since nephrectomy (donation date) in donors, in whom pulse pressure was specifically associated with proteinuria, and renal rejection in recipients. Plasma creatinine doubling secondary to chronic allograft nephropathy was significantly associated with renal rejection and donor pulse wave velocity, independent of age. Our findings strongly suggest consistent interactions (including familial factors) between kidney function and arterial stiffness. Assessment of cause–effect relationships and implication of biochemical and/or genetic factors warrant additional studies.
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Affiliation(s)
- Sola Aoun Bahous
- Nephrology and Transplantation Center, Rizk Hopsital, Beirut, Lebanon
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17
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Abstract
Despite the improvement in short- and long-term kidney allograft survival in recent years, a significant number of grafts are lost because of chronic allograft nephropathy (CAN) or death secondary to cardiovascular disease (CVD). There is growing evidence that both hypertension and hyperlipidemia play important roles in the progression of CAN and CVD in kidney transplant recipients. Large, randomized, controlled studies to determine the optimal target levels for BP and serum lipids, as well as the choice of drug therapy, are lacking. However, based on the available data, we suggest that currently recommended target levels in non-transplant patients should also be used after transplantation. We believe that achieving these target levels for BP and serum lipids are of primary importance, and that the non-lipid-lowering effects of HMG-CoA reductase inhibitors might exert additional benefits in prolonging graft survival.
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Tinckam KJ, Djurdjev O, Magil AB. Glomerular monocytes predict worse outcomes after acute renal allograft rejection independent of C4d status. Kidney Int 2005; 68:1866-74. [PMID: 16164665 DOI: 10.1111/j.1523-1755.2005.00606.x] [Citation(s) in RCA: 111] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
BACKGROUND Both peritubular capillary (PTC) C4d deposition and macrophage/monocyte (MO) infiltration in acute rejection (AR) have separately been shown to be associated with reduced graft survival and recently were demonstrated to be closely correlated in AR. Whether MO infiltration is an independent predictor of graft outcome is uncertain. METHODS All patients with biopsy-proven AR (over a 3-year period) were included (N= 96). All biopsies (N= 121) were graded according to the Banff 97 criteria and immunohistochemically stained for C4d and MO (CD68). The primary outcome was glomerular filtration rate (GFR) <30 mL/min 1-year posttransplant as estimated by the Modified Diet in Renal Disease (MDRD) Formula. Secondary outcomes at 2 and 4 years' posttransplant were also explored. A variety of clinical and biopsy variables were statistically analyzed to establish univariate predictors of graft outcome. Stepwise multivariate logistic regression modeling was applied to determine independent predictors of outcomes. RESULTS There was a close correlation between PTC C4d and glomerular MO infiltration (P < 0.001). Univariate predictors of primary outcome (GFR <30 mL/min 1-year posttransplant) included mean glomerular MO count > or =1.0 MO/glomerulus (P= 0.014), female sex (P= 0.02), higher peak (P= 0.005), and pretransplant (P= 0.003) panel-reactive antibody levels, cadaveric donor (P= 0.006), transplant glomerulitis (P= 0.004), and longer cold ischemic time (CIT) (P= 0.002). Mean MO/glomerulus > or =1.0 [OR 10.3 (1.23, 87.1)], female sex [OR 5.27(1.31, 21.1)], and CIT [OR 1.14 (1.06, 1.25)] were identified as independent predictors of adverse graft outcome. Furthermore, mean MO/glomerulus > or =1.0 independently predicted poor renal function at 2 years [OR 3.89 (1.19, 12.70)] and 4 years [OR 4.03 (1.22, 13.28)] posttransplant. CONCLUSION The results demonstrate that glomerular MO infiltration is an independent predictor of worse outcomes posttransplant following acute renal allograft rejection.
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Affiliation(s)
- Kathryn J Tinckam
- Division of Nephrology, Department of Medicine, Centre for Health Evaluation and Outcome Sciences, St. Paul's Hospital, Vancouver, British Columbia, Canada
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Joosten SA, Sijpkens YWJ, van Kooten C, Paul LC. Chronic renal allograft rejection: Pathophysiologic considerations. Kidney Int 2005; 68:1-13. [PMID: 15954891 DOI: 10.1111/j.1523-1755.2005.00376.x] [Citation(s) in RCA: 148] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Chronic rejection is currently the most prevalent cause of renal transplant failure. Clinically, chronic rejection presents by chronic transplant dysfunction, characterized by a slow loss of function, often in combination with proteinuria and hypertension. The histopathology is not specific in most cases but transplant glomerulopathy and multilayering of the peritubular capillaries are highly characteristic. Several risk factors have been identified such as young recipient age, black race, presensitization, histoincompatability, and acute rejection episodes, especially vascular rejection episodes and rejections that occur late after transplantation. Chronic rejection develops in grafts that undergo intermittent or persistent damage from cellular and humoral responses resulting from indirect recognition of alloantigens. Progression factors such as advanced donor age, renal dysfunction, hypertension, proteinuria, hyperlipidemia, and smoking accelerate deterioration of renal function. At the tissue level, senescence conditioned by ischemia/reperfusion (I/R) may contribute to the development of chronic allograft nephropathy (CAN). The most effective option to prevent renal failure from chronic rejection is to avoid graft injury from both immune and nonimmune mechanism together with nonnephrotoxic maintenance immunosuppression.
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Affiliation(s)
- Simone A Joosten
- Department of Nephrology, Leiden University Medical Center, Leiden, The Netherlands
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20
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Affiliation(s)
- S C Textor
- Division of Nephrology and Hypertension, Mayo Clinic, 200 First Street Southwest, Rochester, MN 55905, USA.
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21
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Weir MR, Blahut S, Drachenburg C, Young C, Papademitriou J, Klassen DK, Cangro CB, Bartlett ST, Fink JC. Late calcineurin inhibitor withdrawal as a strategy to prevent graft loss in patients with suboptimal kidney transplant function. Am J Nephrol 2004; 24:379-86. [PMID: 15237243 DOI: 10.1159/000079390] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2004] [Accepted: 05/18/2004] [Indexed: 11/19/2022]
Abstract
UNLABELLED Chronic allograft nephropathy is a major cause of progressive renal failure in renal transplant recipients. Its etiology is multifactorial and may include both immunologic and nonimmunologic causes. In this observational cohort study we set out to see if calcineurin inhibitor withdrawal would reduce the likelihood of graft loss. METHODS One hundred and five renal transplant recipients with impaired kidney function (mean serum creatinine 3.0 +/- 0.1 mg/dl) and biopsy-proven chronic allograft nephropathy had the dose of their calcineurin inhibitors, cyclosporine (CSA), or tacrolimus (FK), reduced or discontinued with either the addition of, or continuation of mycophenolate mofetil and low-dose corticosteroids. This intervention occurred at a mean of 29.0 +/- 2.7 months after transplantation. Follow-up after intervention was 54.3 +/- 4.1 months in the reduced CSA group (n = 64), 41.6 +/- 3.2 months in the reduced FK group (n = 28), and 75.5 +/- 6.7 months in the calcineurin inhibitor withdrawal group (n = 13). RESULTS There were 24 graft failures in the reduced CSA group, 9 graft failures in the reduced FK group, and 1 graft lost in the calcineurin inhibitor withdrawal group. The unadjusted relative risk for graft failure in the CSA and FK groups combined (confidence interval 1.05-31.6), was 4.07 using the calcineurin inhibitor withdrawal group as the reference, p = 0.05. A Cox proportional hazards model adjusting for baseline covariates including age, gender, race, type of transplant, delayed graft function, baseline blood pressure and random serum glucose and cholesterol demonstrated that only calcineurin inhibitor dose reduction but not withdrawal, older age, delayed graft function, higher serum creatinine at the time of intervention, and higher diastolic blood pressure and serum glucose, correlated with graft loss. Only 6 of the 105 patients developed Banff grade acute rejection. All responded to steroid therapy. We conclude that although this observational cohort study may have a selection bias, late calcineurin inhibitor withdrawal in patients with chronic allograft nephropathy and impaired kidney function appears safe and durable as a treatment strategy to reduce the likelihood of graft failure.
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Affiliation(s)
- Matthew R Weir
- Division of Nephrology, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA.
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Aragão E, Moura LA, Pacheco-Silva A. Monitoring Anti-HLA Class I IgG antibodies in renal transplant recipients. Transplant Proc 2004; 36:836-7. [PMID: 15194287 DOI: 10.1016/j.transproceed.2004.03.060] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Anti-HLA class I IgG antibodies play an important role in hyperacute rejection but the significance of its de novo appearance or increase in levels during the posttransplant period remains controversial. The purpose of this study was to determine the correlation between the anti-HLA class I IgG antibodies and posttransplant events during the first 4 months after renal transplantation. From 200 renal allograft recipients, 549 serum samples were retrospectively evaluated. Patients who experienced graft dysfunction confirmed by biopsy had three serum samples tested: before, during (within 24 hours), and after the event. The presence of anti-HLA antibodies was observed in recipients with chronic allograft nephropathy (60%); acute rejection (clinical criteria without biopsy 57.1%); rejection types IIA (7.1%), IIB (40%), and III (50%); borderline changes (42.8%); acute tubular necrosis (34.4%); infarction (25%); and no rejection (12.5%). We observed a high incidence of anti-HLA class I IgG antibodies during acute tubular necrosis, borderline changes, acute rejection types IIB and III, and chronic allograft nephropathy.
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Affiliation(s)
- E Aragão
- Nephrology Division, São Paulo Federal University, Kidney and Hypertension Hospital, Sao Paulo, SP, Brazil.
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Abstract
Hypertension is extremely common after kidney transplantation. It has been observed in up to 80% to 90% of patients. The etiologies are multifactorial but, in large part, rest with the native kidneys, concomitant immunosuppressant drugs, and behavioral factors that promote the development of higher levels of blood pressure, including obesity, salt intake, smoking, and alcohol consumption. There is a direct relationship between kidney allograft failure and level of systolic blood pressure during follow-up. Patients with a systolic blood pressure greater than 180 mmHg have 2-fold greater risk of loss of graft function compared with patients with systolics of less than 140 mmHg. A similar pattern exists for diastolic blood pressure. Some investigators have also demonstrated that higher levels of blood pressure also correlate with an increased risk of acute graft rejection, particularly in African Americans. What is not known is whether more effective control of arterial pressure in the transplant patient will reduce the likelihood of graft loss and improve survival. No prospective outcome trials have ever been performed. However, it is likely, given the marked success of better control of blood pressure in nontransplant patients in reducing cardiovascular death and the rate of progression of kidney disease, that similar benefits will be appreciated in the transplant patient. Given the greater cardiovascular burden in the kidney transplant recipient because of the presence, in many cases, of diabetes and hypertension, perhaps even more risk reduction may be realized with incremental reductions in blood pressure. Preferred treatment strategies for lowering blood pressure depends on the mechanism of action and medical comorbidity. Drugs that block the renin-angiotensin system should be preferentially considered because they may have similar advantages in delaying progressive loss of allograft function, much in the same way they have proven benefits in protecting native kidney function. Treating blood pressure in the kidney transplant recipient is a complicated process because patients are already on multiple medications and many will need 3 to 5 antihypertensive drugs to achieve optimal control of blood pressure, which should preferably be below 130/80 mmHg.
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Affiliation(s)
- Matthew R Weir
- Division of Nephrology, University of Maryland School of Medicine, 22 South Greene Street, Suite N3W143, Baltimore, MD 21201, USA.
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Abstract
Adequate control of hypertension is among the most important aims of medical management of the kidney transplant recipient, with the aim of reducing the risk of premature cardiovascular disease and preserving graft function. Antihypertensive therapy should be adjusted according to the best available estimates of usual resting blood pressure. If clinic measurements are used, care should be taken to ensure that these measurements are taken under optimal conditions. Home blood pressure monitoring is a useful adjunct in many patients. Ambulatory blood pressure monitoring gives valuable additional data; mean ambulatory blood pressure correlates better with markers of target organ damage such as left ventricular hypertrophy. However, current treatment thresholds and targets are based on clinic measurements. Ambulatory blood pressure monitoring is certainly a useful adjunct to clinic and home blood pressure measurement, but its role in routine clinical practice in the transplant clinic remains to be defined.
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Cosio FG, Henry M, Pesavento TE, Ferguson RM, Kim S, Lemeshow S. The relationship between donor age and cadaveric renal allograft survival is modified by the recipient's blood pressure. Am J Transplant 2003; 3:340-7. [PMID: 12614292 DOI: 10.1034/j.1600-6143.2003.00064.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Increasing donor age correlates with reduced renal allograft survival. In this study we analyzed variables that may modify this relationship. The study included 1285 cadaveric kidney allograft recipients followed for 7.2 + 4.5 years. By Cox, increasing donor age beyond 30 years was associated with significant increases in the hazard ratio for graft loss [age 31-46, hazard ratio (HR) = 1.4, p = 0.02; 46-60, HR = 1.55, p = 0.008; > 60, HR = 1.68, p = 0.03]. Increasing donor age was significantly associated with: older and heavier recipients; higher creatinine and blood pressure (BP) 6 months post-transplant; and lower total cyclosporine dose during the first year. Of interest, the 6-month serum creatinine and the BP level modified significantly the relationship between age and survival. Thus, increasing donor age was significantly related to reduced graft survival only in patients with a 6-month creatinine < 2 mg/dL. Furthermore, donor age related significantly to graft survival only among patients with higher BP levels 6 month post transplant. It is concluded that increasing donor age is associated with reduced cadaveric graft survival, but that relationship is significantly modified by graft function and BP. These data suggest that poorly functioning kidneys have reduced survival irrespective of age. Furthermore, elevated BP levels may have a particularly negative effect on the survival of older grafts.
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Affiliation(s)
- Fernando G Cosio
- Departments of Internal Medicine, Pathology, Surgery and Center for Biostatistics, The Ohio State University, Columbus, Ohio, USA.
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Ciancio G, Burke GW, Suzart K, Roth D, Kupin W, Rosen A, Olson L, Esquenazi V, Miller J. Daclizumab induction, tacrolimus, mycophenolate mofetil and steroids as an immunosuppression regimen for primary kidney transplant recipients. Transplantation 2002; 73:1100-6. [PMID: 11965039 DOI: 10.1097/00007890-200204150-00015] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
BACKGROUND Recent reports have demonstrated the efficacy of interleukin-2-receptor blockers in lowering the incidence of early acute rejection in cyclosporine-treated kidney recipients when compared to patients not induced with an antibody product. The addition of daclizumab to a tacrolimus-mycophenolate mofetil-based immunosuppressive protocol was tested to evaluate whether there might be an additional reduction of the risk of rejection after renal transplantation. METHODS Since March 1998, we studied the effect of daclizumab in a nonrandomized, prospective study of 233 sequential recipients of first renal transplant. They were retrospective compared with a control group of 225 renal transplant recipients receiving a 10-day course of OKT3 induction, and tacrolimus, mycophenolate mofetil, and methylprednisolone maintenance. The study group received the same immunosuppressive regimen with the addition of daclizumab at 1 mg/kg for five doses over 10 weeks in the place of OKT3 therapy. There was at least 1HLA DR antigen compatibility match present between all donors and recipients. Patients were followed for 1 year after renal transplantation for the incidence of biopsy-proven acute rejection, patient and graft survival, and adverse events. RESULTS At 12 months, patient and graft survival for the daclizumab was 98 and 96 vs. 96 and 94% for the OKT3 group, respectively, and were not statistically different. Acute rejection rates (<6 months) were lower in the daclizumab group as compared with the OKT3 group, i.e., 5 (2.1%) vs. 16 (7.1%) (P=0.011) respectively. The incidence of infection requiring hospitalization appeared to be lower with daclizumab (7.3 vs. 16%, P<0.0036) with a similar trend with cyclomegalovirus infection, i.e., 1.6 vs. 4%, respectively (P=0.14). CONCLUSIONS The combination of daclizumab, tacrolimus, mycophenolate mofetil, and steroids is safe and effective for kidney transplant recipients in lowering the incidence of early acute rejection and without any increase in morbidity when compared to our previous protocol, which may have an eventual impact in long-term graft survival.
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Affiliation(s)
- Gaetano Ciancio
- Department of Surgery, Division of Transplantation, University of Miami School of Medicine, Miami, FL 33101, USA
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Herzenberg AM, Gill JS, Djurdjev O, Magil AB. C4d deposition in acute rejection: an independent long-term prognostic factor. J Am Soc Nephrol 2002; 13:234-241. [PMID: 11752043 DOI: 10.1681/asn.v131234] [Citation(s) in RCA: 177] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Peritubular capillary deposition of C4d has been demonstrated to be associated with both acute humoral and vascular rejection and increased graft loss. Whether it is an independent predictor of long-term graft survival rates is uncertain. The biopsies (n = 126) from all patients (n = 93) with a tissue diagnosis of acute rejection that were performed between July 1, 1995, and December 31, 1997, were classified according to Cooperative Clinical Trials in Transplantation (CCTT) criteria. Fresh frozen tissue was immunostained for C4d. There were 58 patients with CCTT type I (interstitial) rejection and 35 with CCTT type II (vascular) rejection. For 34 patients, at least one biopsy exhibited peritubular C4d deposition (C4d+ group). The C4d+ group had proportionately more female patients (P = 0.003), more patients with high (>30%) panel-reactive antibody levels (P = 0.024), more patients with resistance to conventional antirejection therapy (P = 0.010), and fewer patients with postrejection hypertension (P = 0.021) and exhibited a greater rate of graft loss (38 versus 7%, P = 0.001). Peritubular C4d deposition was associated with significantly lower graft survival rates in the CCTT type I rejection group (P = 0.003) and the CCTT type II rejection group (P = 0.003). Multivariate analyses demonstrated that peritubular C4d deposition (P = 0.0002), donor age (P = 0.0002), cold ischemic time (P = 0.0211), and HLA matches (P = 0.0460) were significant independent determinants of graft survival rates. Peritubular C4d deposition is a significant predictor of graft survival rates and is independent of histologic rejection type and a variety of clinical prognostic factors.
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Affiliation(s)
- Andrew M Herzenberg
- Departments of *Pathology and Laboratory Medicine and Medicine and Centre for Health Evaluation and Outcome Sciences, St. Paul's Hospital, and Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - John S Gill
- Departments of *Pathology and Laboratory Medicine and Medicine and Centre for Health Evaluation and Outcome Sciences, St. Paul's Hospital, and Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Ognjenka Djurdjev
- Departments of *Pathology and Laboratory Medicine and Medicine and Centre for Health Evaluation and Outcome Sciences, St. Paul's Hospital, and Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Alex B Magil
- Departments of *Pathology and Laboratory Medicine and Medicine and Centre for Health Evaluation and Outcome Sciences, St. Paul's Hospital, and Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
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Ciancio G, Miller J, Garcia-Morales RO, Carreno M, Burke GW, Roth D, Kupin W, Tzakis AG, Ricordi C, Rosen A, Fuller L, Esquenazi V. Six-year clinical effect of donor bone marrow infusions in renal transplant patients. Transplantation 2001; 71:827-35. [PMID: 11349712 DOI: 10.1097/00007890-200104150-00002] [Citation(s) in RCA: 108] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND To date, several single- and multicenter clinical trials have attempted to induce specific immunological unresponsiveness using donor bone marrow cell infusions to augment solid organ transplantation, but the outcomes have not been definitive. METHODS Between September 1994 and May 1998, 63 cadaver (CAD) renal transplant recipients of either one or two postoperative donor bone marrow cell (DBMC) infusions were prospectively compared with 219 non-infused controls given equivalent immunosuppression. There was at least a 1 HLA DR antigen match present between donors and recipients. The immunosuppressive regimen included a 10-day course of OKT3 induction, and tacrolimus, mycophenolate mofetil, and methylprednisolone maintenance. A total 7.01x10(8)+/-1.9x10(8) (SD) DBMC/kg was infused into the CAD recipients on either days 4 and 11 (n=42) or one half of that dose on day 4 (n=21) postoperatively. Clinical follow-up has ranged from 2.9 to 6.3 years (mean, 4.7 years). Studies were also performed of humoral immunity and quantitative cellular chimerism. RESULTS There is clear-cut equivalence in immunosuppressive dosaging and in the other major demographic variables in both groups. However, only 2/63 DBMC recipients had biopsy-proven chronic rejection, whereas 41/219 showed chronic rejection in the controls (P = <0.01). In both groups, mortality was not associated with rejection. The actuarial graft survival at 6.3 years in the CAD DBMC group was 84.3% compared with 72.2% in the control group (not statistically significant). However, if death with a functioning graft was excluded, graft survival was 94.1% in the DBMC group and 79.8% in the controls (P=0.039). Forty patients in the control group continue to have deteriorating renal function (increasing serum creatinine concentrations to 2 mg/dl and higher), compared with 2 patients in the DBMC group (P=0.04). In the DBMC group, chimerism in iliac crest marrow aspirates has increased 3-fold in yearly sequential measurements between 1 and 4 years postoperatively averaging 1.3+/-0.36% (SE) most recently. This has not occurred in the controls. CONCLUSIONS There now appears to be more solid long-term evidence, in kidney transplant recipients prospectively receiving DBMC infusions, of an improvement in long-term graft survival, and of the degree of chimerism positively correlating with the absence of graft loss.
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Affiliation(s)
- G Ciancio
- Department of Surgery, Diabetes Research Institute, University of Miami School of Medicine, Florida 33101, USA.
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Cosio FG, Pelletier RP, Pesavento TE, Henry ML, Ferguson RM, Mitchell L, Lemeshow S. Elevated blood pressure predicts the risk of acute rejection in renal allograft recipients. Kidney Int 2001; 59:1158-64. [PMID: 11231374 DOI: 10.1046/j.1523-1755.2001.0590031158.x] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND Acute rejection (AR) is a strong predictor of renal allograft survival. Recent advances in immunosuppression have reduced considerably the incidence of AR. Still, approximately 25% of patients have AR early post-transplant, and the factors that predispose to AR have not been fully clarified. METHODS The study includes 1641 adults, recipients of first cadaveric (CAD, N = 1195) or living related renal grafts (LRD, N = 446), transplanted in one institution. The variables associated with the occurrence of AR during the first year post-transplant were identified. RESULTS By univariate analyses, AR was associated with the following variables: younger (P < 0.001); heavier (P = 0.003); and African American recipients (P = 0.002); CAD transplants (P = 0.001); higher number of HLA mismatches (P = 0.001); delayed graft function (DGF, P = 0.001); higher levels of serum creatinine post-transplant (P = 0.003); and higher levels of systolic and/or diastolic blood pressure (BP) post-transplant (P < 0.001). Higher BP levels were also associated with earlier AR episodes (P < 0.0001). By multivariable analysis AR was significantly associated with recipient age, number of HLA mismatches, DGF, pre-PRA and systolic BP. Analysis of BP measured weekly post-transplant indicated that elevated BP levels, even three weeks prior to the AR episode, were significantly associated with AR. For every level of BP, the use of BP medications was associated with a lower incidence of AR (P < 0.0001). Furthermore, the use of calcium channel blockers was also associated with lower incidence of AR (P = 0.001). Of note, 81% of recipients whose BP increased after the transplant had AR. In contrast, 22% of patients whose BP declined post-transplant had AR. CONCLUSIONS Elevated BP levels post-transplant identify patients at high risk of AR independently of graft function. Treatment of BP and reduction of BP levels appears to be associated with a decreased risk of AR. We hypothesize that high BP may be an indicator of a particular type of allograft damage, perhaps ischemic, that may predispose to AR.
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Affiliation(s)
- F G Cosio
- Department of Internal Medicine, The Ohio State University, Columbus,Ohio 43210-1250, USA
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Ritz E, Schömig M, Wagner J. Counteracting progression of renal disease: A look into the future. KIDNEY INTERNATIONAL. SUPPLEMENT 2000; 75:S71-6. [PMID: 10828765 DOI: 10.1046/j.1523-1755.2000.07513.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
It is the very nature of research, including medical research, that truly novel results are not predictable. Nevertheless, some predictions concerning the understanding and management of progression of renal disease are plausible. It is very likely that in the future, exploding health budgets will force authorities and nephrologists to more effectively apply existing knowledge in this field to patients with early renal disease, particularly diabetics. We hope that this optimistic note is justified, although experience admittedly indicates that it is very much against human nature to behave rationally. With the powerful methodological tools available today, it is safe to predict that insight into the mechanisms underlying progression will also increase. Although pharmacological blockade of the renin-angiotensin system has been one of the great success stories of the past two decades, in many patients, progression is seen despite administration of angiotensin-converting enzyme (ACE) inhibitors and angiotensin receptor blockers. Fortunately, additional targets for intervention, such as endothelin-1, inflammatory cascades, chemokines, etc., are on the horizon. A particularly fertile target for prevention of progression will be kidney grafts, since it has become increasingly clear that factors unrelated to allo-immunity play an important role in chronic allograft nephropathy.
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Affiliation(s)
- E Ritz
- Department of Internal Medicine, Ruperto Carola University, Heidelberg, Germany
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